2-dimethylaminomethylene-5,5-dimethylcyclohexane-1,3-dione 、 methyl 5-amino-3,4-dihydro-7-methyl-3-(p-methylphenyl)-4-oxothieno<3,4-d>pyridazine-1-carboxylate 在
溶剂黄146 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 0.02h,
以45%的产率得到methyl 5-[(4,4-dimethyl-2,6-dioxocyclohexylidenemethyl)amino]-7-methyl-4-oxo-3-p-tolyl-3,4-dihydrothieno[3,4-d]pyridazine-1-carboxylate